Quantitative Aptitude - Arithmetic Ability Questions

Which one among the following does not belong to the group?

A bank offers 10% compound interest per half year. A customer deposits Rs. 3600 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is.

On dividing 8a2b2c2 by 4a2, we get

What is the length of the side of an equilateral triangle, if its area is 64√3 sq cm?

If a3 + b3 = 19 and ab = -6 , then what is the value of a + b?

If the simple interest on Rs. 400 for 10 years is Rs. 280, then rate of interest per annum is

Find the odd word/letters/number pair from the given alternatives.
(A) 52­61 (B) 43­54 (C ) 72­83 (D) 18­29

An electric pump can fill a tank in 2 hours. Because of a leak in the tank, it was taking 21⁄2 hours to fill the tank. The leak can drain all the water off the tank in how many hours?